/*
 * Copyright 2006-2008 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.martinimix.webflow.accessor;

import org.springframework.webflow.execution.RequestContext;

/**
 * Provides access to objects in the external context session
 * from a web flow context.
 * 
 * @author Scott Rossillo
 *
 */
public class SessionObjectAccessor implements FlowObjectAccessor {
	
	/**
	 * Creates a new external session object accessor.
	 */
	public SessionObjectAccessor() { }
	
	/**
	 * Returns an object from the external session.
	 * 
	 * @see net.martinimix.webflow.accessor.FlowObjectAccessor#getObject(java.lang.String, org.springframework.webflow.execution.RequestContext)
	 */
	public Object getObject(String objectName, RequestContext context) {
		
		return context.getExternalContext().getSessionMap().get(objectName);
	}
	
	/**
	 * Stores the given object in the external session.
	 * 
	 * @see net.martinimix.webflow.accessor.FlowObjectAccessor#putObject(java.lang.String, java.lang.Object, org.springframework.webflow.execution.RequestContext)
	 */
	public void putObject(String objectName, Object object, RequestContext context) {
		
		context.getExternalContext().getSessionMap().put(objectName, object);
	}
	
}
